black Week14

 week14

1.畫一個圓形

2.啟動計時器(4秒背景變色)

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidSphere(0.3,30,30);

    glutSwapBuffers();

}

void timer(int t)

{

    glClearColor(1,0,0,0);

    display();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week14 timer ");

    glutDisplayFunc(display);

    glutTimerFunc(4000,timer,0);

    glutMainLoop();

}

3.經緯度,Wiresphere切法

4.定時選轉方塊

5.利用angle+=diff控制旋轉角度

6.快速方塊

7.旋轉方塊手臂

#include <GL/glut.h>

int angle=0;

void drawArm1()

{

    glPushMatrix();

        glScalef(1,0.5,0.5);

        glColor3f(1,0,0);glutSolidCube(0.3);

    glPopMatrix();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glColor3f(1,1,1);glutSolidCube(0.4);

    glPushMatrix();

        glTranslatef(-0.2,+0.2,0);

        glRotatef(angle,0,0,1);

        glTranslatef(-0.15,+0,0);

        drawArm1();

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int diff=2;

void timer(int t)

{

    glutTimerFunc(20,timer,t+1);

    angle+=diff;

    if(angle>90||angle<0)diff=-diff;

    display();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week14 timer ");

    glutDisplayFunc(display);

    glutTimerFunc(0,timer,0);

    glutMainLoop();

}